US3615070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centering and holding apparatus
Assignee: International Business Machines Corp
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Filing: 1969-04-16
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Granted: 1971-10-26
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Expires: 1989-04-16
Abstract
Abstract APPARATUS FOR RADIALLY CENTERING AND AXIALLY ALIGNING AN OBJECT, SUCH AS A MAGNETIC DISK PACK, WITH RESPECT TO A SPINDLE OF A DISK FILE AND HOLDING THE DISK PACK IN PLACE. THE SPINDLE IS TOPPED BY A CYLINDRICAL SURFACE BEVELED AT THE OUTER EDGE. THE CENTERING APPARATUS COMPRISES A RING SLOTTED TO PROVIDE THREE SPRING-LOADED TABS ARRANGED TO BE OF INTERFERENCE FIT WITH THE CYLINDRICAL SURFACE. THE BEVELED EDGE SERVES AS A CAM TO SPREAD THE TABS OF THE RING RADIALLY AND THE TABS ENGAGE THE CYLINDRICAL SURFACE TO HOLD AND CENTER THE DISK PACK. A SET OF THREE BUTTONS IS PROVIDED WITH THE CENTERING APPARATUS TO REST ON A SURFACE OF THE SPINDLE TO AXIALLY ALIGN THE PACK.
Inventors
- 👤 Richard J Charlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:59
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/038; G11B23/00; G11B23/0014; G11B23/0021; G11B23/0028; G11B23/0035; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17291; Y10T279/17316
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |